Use After Free in Qpdf Project
CVE-2021-25786
An issue was discovered in QPDF version 10.0.4, allows remote attackers to execute arbitrary code via crafted .pdf file to Pl_ASCII85Decoder::write parameter in libqpdf.
Vulnerability class: Use-After-Free
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:L.
EPSS exploit prediction
EPSS: 0.005 (43.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 43rd percentile — 43.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
- Qpdf Project — versions 10.0.4
Weakness classification (CWE)
Public proof-of-concept exploits
References
- github.com/qpdf/qpdf/issues/492 (Exploit, Patch, Issue Tracking)
- lists.debian.org/debian-lts-announce/2023/08/msg00037.html (mailing-list, Mailing List, Third Party Advisory)
Frequently asked questions
- What is CVE-2021-25786?
- CVE-2021-25786 is a medium-severity vulnerability in Qpdf Project, classified under Use After Free. CVSS score: 5.3/10. Published 2023-08-11.
- How severe is CVE-2021-25786?
- Medium severity. CVSS v3 base score is 5.3 out of 10.
- Is CVE-2021-25786 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.